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Occurrence of the ophiolitic complexes along the Indoburman orogenic belt

Published online by Cambridge University Press:  01 May 2009

R. Duarah ,
M. M. Saikia  and
C. C. Bhattacharjee
R. Duarah
Affiliation:
Regional Research Laboratory (CSIR), Jorhat - 785 006, India
M. M. Saikia
Affiliation:
Regional Research Laboratory (CSIR), Jorhat - 785 006, India
C. C. Bhattacharjee
Affiliation:
Department of Geology, Guwahati University, Guwahati - 781 014, India
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Summary

The ophiolitic complexes within the Indoburman orogenic belt form a conspicuous N-S line along the eastern margins of Manipur and Nagaland. The rock assemblages consisting of mafic-ultramafics are associated with deep sea pelagic sediments of the Disang Group (Lower Cretaceous-Eocene). The ultramafics in part, represent the oceanic crust and upper mantle material that formed the basement on which the radiolarites and other pelagic sediments were deposited. The fossil radiolaria present in the cherts suggest that the orogen took its foundation during late Jurassic-Lower Cretaceous time. The westward obduction of the flysch ophiolites in the form of large thrust sheets was possible during underthrusting of the Indian plate beneath the Burmese. The position of the ophiolitic belt defines the Indoburman suture zone.

Type
Articles
Information
Geological Magazine , Volume 120 , Issue 2 , March 1983 , pp. 175 - 182
Copyright
Copyright © Cambridge University Press 1983

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References

REFERENCES

Brunnschweiler, R. O. 1966. On the geology of the Indoburman Ranges. J. geol. Soc. Aust. 13, 137–94.CrossRefGoogle Scholar
Chhibber, H. L. 1932. Myitkyina District. Geological Traverses. Rec. geol. Surv. India. 66 (1).Google Scholar
Chhibber, W. L. 1934. The Geology of Burma. London: Macmillan.Google Scholar
Coleman, R. G. 1971. Plate tectonic emplacement of upper mantle peridotite along continental edges. J. geophys. Res. 76, 1212–1222.CrossRefGoogle Scholar
Dewey, J. F. & Bird, J. M. 1971. Origin and emplacement of the ophiolite suite. Appalachian ophiolites in Newfoundland. J. geophys. Res. 76, 3179–206.CrossRefGoogle Scholar
Dietz, R. S. 1963. Alpine serpentinites as oceanic rind fragments. Bull. geol. Soc. Am. 74, 947–52.CrossRefGoogle Scholar
Dutta, T. K. & Saikia, M. M. 1976. The eastern limit of the Himalayan orogenic belt - The Indoburman orogen and its geodynamic development. Himalayan Geol. 6, 303–13.Google Scholar
Evans, P. & Crompton, W. 1946. Geological factors in gravity interpretation illustrated by evidence from India and Burma. Q. JI geol. Soc. Lond. 102, 211–49.CrossRefGoogle Scholar
Graham, S. A., Dickinson, W. R. & Ingersoll, R. V. 1975. Himalayan Bengal model for flysch dispersal in the Appalachian - Onachita systems. Bull. geol. Soc. Am. 86, 273–86.2.0.CO;2>CrossRefGoogle Scholar
Hutchison, C. S. 1975. Ophiolites in southeast Asia. Bull. geol. Soc. Am. 86, 797–806.2.0.CO;2>CrossRefGoogle Scholar
Krishnan, M. S. 1953. The structural and tectonic history of India. Mem. geol. Surv. India. 81.Google Scholar
Maxwell, J. C. 1969. ‘Alpine’ mafic and ultramafic rocks - the ophiolite suite. Tectonophysics 7, 489–94.CrossRefGoogle Scholar
Mitchell, A. H. G. & Mckerrow, W. S. 1975. Analogous evolution of the Burma orogen and the Scottish Caledonides. Bull. geol. Soc. Am. 86, 305–15.2.0.CO;2>CrossRefGoogle Scholar
Moores, E. M. 1969. Petrology and structure of the Vourinos ophiolitic complex of northern Greece. Spec. Pap. geol. Soc. Am. 118, 1–74.Google Scholar
Santo, T. 1969. Regional study on the characteristic seismicity of the world, Part II. From Burma down to Java. Bull. Earthq. Res. Inst. 47, 1049–61.Google Scholar
Searle, D. L. & Haq, B. T. 1964. The Mogok belt of Burma and its relationship to the Himalayan orogeny. Internal. geol. Cong. 22nd. New Delhi, pp. 132–61.Google Scholar
Thayer, T. P. 1969. Peridotite-gabbro complexes as keys to petrology of mid-oceanic ridges. BulL geol. Soc. Am. 80, 1515–22.CrossRefGoogle Scholar
Thein, N. 1973. A preliminary synthesis of the geological evolution of Burma with reference to the tectonic development of southeast Asia. Bull. geol. Soc. Malayasia 6, 87–116.Google Scholar